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160 lines
4.7 KiB
160 lines
4.7 KiB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
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/*************************************************************************** |
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* Linux PPP over X - Generic PPP transport layer sockets |
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* Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516) |
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* |
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* This file supplies definitions required by the PPP over Ethernet driver |
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* (pppox.c). All version information wrt this file is located in pppox.c |
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* |
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* License: |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version |
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* 2 of the License, or (at your option) any later version. |
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* |
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*/ |
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#ifndef _UAPI__LINUX_IF_PPPOX_H |
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#define _UAPI__LINUX_IF_PPPOX_H |
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#include <linux/types.h> |
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#include <asm/byteorder.h> |
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#include <linux/socket.h> |
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#include <linux/if.h> |
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#include <linux/if_ether.h> |
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#include <linux/if_pppol2tp.h> |
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#include <linux/in.h> |
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#include <linux/in6.h> |
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/* For user-space programs to pick up these definitions |
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* which they wouldn't get otherwise without defining __KERNEL__ |
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*/ |
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#ifndef AF_PPPOX |
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#define AF_PPPOX 24 |
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#define PF_PPPOX AF_PPPOX |
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#endif /* !(AF_PPPOX) */ |
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/************************************************************************ |
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* PPPoE addressing definition |
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*/ |
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typedef __be16 sid_t; |
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struct pppoe_addr { |
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sid_t sid; /* Session identifier */ |
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unsigned char remote[ETH_ALEN]; /* Remote address */ |
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char dev[IFNAMSIZ]; /* Local device to use */ |
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}; |
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/************************************************************************ |
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* PPTP addressing definition |
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*/ |
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struct pptp_addr { |
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__u16 call_id; |
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struct in_addr sin_addr; |
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}; |
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/************************************************************************ |
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* Protocols supported by AF_PPPOX |
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*/ |
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#define PX_PROTO_OE 0 /* Currently just PPPoE */ |
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#define PX_PROTO_OL2TP 1 /* Now L2TP also */ |
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#define PX_PROTO_PPTP 2 |
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#define PX_MAX_PROTO 3 |
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struct sockaddr_pppox { |
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__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
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unsigned int sa_protocol; /* protocol identifier */ |
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union { |
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struct pppoe_addr pppoe; |
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struct pptp_addr pptp; |
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} sa_addr; |
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} __packed; |
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/* The use of the above union isn't viable because the size of this |
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* struct must stay fixed over time -- applications use sizeof(struct |
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* sockaddr_pppox) to fill it. We use a protocol specific sockaddr |
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* type instead. |
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*/ |
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struct sockaddr_pppol2tp { |
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__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
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unsigned int sa_protocol; /* protocol identifier */ |
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struct pppol2tp_addr pppol2tp; |
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} __packed; |
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struct sockaddr_pppol2tpin6 { |
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__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
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unsigned int sa_protocol; /* protocol identifier */ |
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struct pppol2tpin6_addr pppol2tp; |
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} __packed; |
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/* The L2TPv3 protocol changes tunnel and session ids from 16 to 32 |
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* bits. So we need a different sockaddr structure. |
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*/ |
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struct sockaddr_pppol2tpv3 { |
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__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
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unsigned int sa_protocol; /* protocol identifier */ |
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struct pppol2tpv3_addr pppol2tp; |
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} __packed; |
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struct sockaddr_pppol2tpv3in6 { |
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__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
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unsigned int sa_protocol; /* protocol identifier */ |
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struct pppol2tpv3in6_addr pppol2tp; |
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} __packed; |
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/********************************************************************* |
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* |
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* ioctl interface for defining forwarding of connections |
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* |
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********************************************************************/ |
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#define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t) |
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#define PPPOEIOCDFWD _IO(0xB1 ,1) |
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/*#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)*/ |
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/* Codes to identify message types */ |
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#define PADI_CODE 0x09 |
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#define PADO_CODE 0x07 |
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#define PADR_CODE 0x19 |
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#define PADS_CODE 0x65 |
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#define PADT_CODE 0xa7 |
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struct pppoe_tag { |
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__be16 tag_type; |
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__be16 tag_len; |
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char tag_data[0]; |
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} __attribute__ ((packed)); |
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/* Tag identifiers */ |
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#define PTT_EOL __cpu_to_be16(0x0000) |
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#define PTT_SRV_NAME __cpu_to_be16(0x0101) |
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#define PTT_AC_NAME __cpu_to_be16(0x0102) |
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#define PTT_HOST_UNIQ __cpu_to_be16(0x0103) |
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#define PTT_AC_COOKIE __cpu_to_be16(0x0104) |
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#define PTT_VENDOR __cpu_to_be16(0x0105) |
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#define PTT_RELAY_SID __cpu_to_be16(0x0110) |
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#define PTT_SRV_ERR __cpu_to_be16(0x0201) |
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#define PTT_SYS_ERR __cpu_to_be16(0x0202) |
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#define PTT_GEN_ERR __cpu_to_be16(0x0203) |
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struct pppoe_hdr { |
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#if defined(__LITTLE_ENDIAN_BITFIELD) |
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__u8 type : 4; |
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__u8 ver : 4; |
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#elif defined(__BIG_ENDIAN_BITFIELD) |
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__u8 ver : 4; |
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__u8 type : 4; |
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#else |
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#error "Please fix <asm/byteorder.h>" |
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#endif |
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__u8 code; |
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__be16 sid; |
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__be16 length; |
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struct pppoe_tag tag[0]; |
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} __packed; |
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/* Length of entire PPPoE + PPP header */ |
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#define PPPOE_SES_HLEN 8 |
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#endif /* _UAPI__LINUX_IF_PPPOX_H */
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